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通过扫描电镜观察、测试仪器分析、实际里程诼参考国内外试验报道,研究了硫化压力、胎面应力状态、硫化程度和硫化温度对胶料密实度、硫化胶物理性能、预硫化翻新胎面轮胎实际里程、粘合层粘合强度、胎面耐磨性和耐久性的影响。结果表明,提高硫化压力可改善胎面耐磨性,当硫化压力低于0.5MPa时可提高粘合层的 事强度,预硫化胎面处于应力要公弛状态和或压缩状态时对胎面的耐磨性有利,预硫化胎面翻新轮胎的最佳硫化温度应控 相似文献
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环形预硫化胎面翻胎技术是意大利马朗贡尼公司于 1 976年开发并投放市场的。 1 976年原化工部下达过科研项目并试制过主要设备。 1 981年原重庆翻胎厂从马朗贡尼公司引进了一套环形预硫化胎面翻胎生产设备 ,并投入生产。由于我国当时尚不具备发展条件 ,1 998年以前预硫化胎面翻胎生产在我国基本上无大发展 ( 1 994年美国等国翻胎跨国公司曾拟大举进入 ,但由于市场机制尚未形成 ,到 1 997年大多数拟建及已建厂收缩或裁减 )。 2 0世纪 90年代世界预硫化翻胎生产有重大发展 ,但主要是条形预硫化胎面法翻胎技术 ,这是因为条形预硫化胎面较适合大… 相似文献
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马来西亚大轮公司开发的预硫化胎面翻新新技术,淘汰了传统预硫化胎面翻新技术中的许多旧观念。该工艺称为:“侧密封”工艺,它可使翻胎厂在进行载重轮胎翻新时,不需使用内包封套、外包封套或硫化环。 相似文献
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预硫化胎面翻新的进展PaulMeyer著高称意编译涂学忠校预硫化胎面翻新技术的主要进展之一是采用挤出法上位于已打磨好的胎体与预硫化胎面之间的缓冲胶,即粘接胶,其目的是改善粘合效果并降低成本。传统的做法是将缓冲胶压延成胶片,再把它贴到打磨好的胎体表面上... 相似文献
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本文叙述了我国翻胎企业的质量管理的意义,详细介绍了开展质量管理不仅要抓好各道工序的质量检验,提高产品质量,而且还要建立质量保证体系,搞好质量管理基础工作。 相似文献
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EPDM foam was prepared by dynamically vulcanizing EPDM compound in a HAAKE rheometer firstly, then mixing the partially precured EPDM compound with a blowing agent and a sulfur vulcanizing system on a two roll mill. The compound was extruded through a cold feed extruder, and the extrudate was foamed in a circulating hot air oven. EPDM compound was vulcanized partly in the HAAKE rheometer, the final torque increases with increasing sulfur content. Rheological measurement shows the dynamic storage modulus, the loss modulus, and the complex viscosity of precured EPDM compound increase with increasing sulfur content. Then the partially precured EPDM compound was compounded with a blowing agent and a sulfur vulcanizing systems, Rheometric measurement shows that the rate of vulcanization of partially precured EPDM compound is not affected by the precure. The blowing results show that the foam processibility could be improved and the expansion ratio increases in the same processing condition for optimum partially precured EPDM compound, which indicates the optimum crosslink density for EPDM could enhance the efficiency of blowing agent AC. SEM shows that the foam articles have a closed‐cell structure with few open cells, and the large cells inlay among the small cells. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 3387–3394, 2006 相似文献
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谈预硫化翻胎胎体的保护 总被引:1,自引:0,他引:1
预硫化胎面法翻胎简称冷翻,传统法翻胎称为热翻.冷翻有利于保护胎体,但现在存在问题是多数厂家冷翻时硫化温度过高,从而使产量和质量降低.为此,提倡冷翻时低温硫化,并且翻胎用缓冲胶的配方、混炼和存放都应按一定工艺进行. 相似文献
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翻新轮胎易存在的质量问题及整改措施 总被引:1,自引:0,他引:1
针列广东翻胎合格率低的问题,着重说明了:①刻花轿车胎的市场现状,并指出现今正规翻胎厂并不生产刻花胎;②翻新胎存在标签不合格、耐久性不合格,及外观质量不合格、花纹沟底开裂等问题,为此提出了相应的整改措施。 相似文献
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近几年,我国翻眙业装备水平有了较大提升,翻胎企业数量增长迅速,但轮胎翻新率不高,资源浪费较大.为此,国家相继出台文件,要求加强对废旧轮胎的回收利用,并提供一些优惠政策.由于我国公路建设加快,交通运输业和工、矿业的发展,使轮胎翻新业发展空间较大.并分析了制约翻胎业发展的不利因素.提出为促进翻胎业的发展,建议协会及行业界应努力做到的几个事项.最后,对2010年我国翻胎业进行了预测. 相似文献
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Sung-Seen Choi Jong-Chul Kim Hye-Min Lee 《Journal of Industrial and Engineering Chemistry》2009,15(5):624-627
Retreading of tire is closely related with adhesion between precured and uncured rubber sheets. Adhesion specimens between precured and uncured rubber sheets of BR and NR were prepared and thermally aged at 90 °C for 3 days. Organic materials remained in the adhesion sheets were extracted with THF and analyzed using gas chromatography/mass spectrometry (GC/MS). Elemental sulfur (S8), mercaptobenzothiazole (MBT), antidegradants, and fatty acids were detected as major organic materials remained in the adhesion sheets. Amounts of the organic materials were reduced by the thermal aging and varied with the adhesion specimens of BR/BR, NR/NR, BR/NR, and NR/BR as the precured and uncured rubber sheets. Decrements of the S8, MBT, and fatty acids in the NR sheet were larger than in the BR one due to the faster cure characteristics of NR. Changes of the adhesion forces and crosslink densities by the thermal aging were measured. Adhesion force of only the precured BR/uncured NR specimen by the thermal aging was enhanced whereas those of the other specimens were reduced. This was explained with the crosslink density changes and migration of the organic materials through the interface of the adhesion specimen. 相似文献